Harrow-tooth



(No Model.)

W. KELLY.

Harrow Tooth.

No. 231,816. Patented Aug. 31,1880. I

74 5221 gage s1 In WWI'ZUI' mmmw N. PETERS. PNOTO-UTHOGRAPNE R,WASHINGTON. ac.

UNITED STATES PATENT OFFICE.

W'ILLIAM KELLY, OF SARANAG, MICHIGAN.

HARROW-TOOTH.

SPECIFICATION forming part of Letters Patent No. 231,816, dated August31, 1880.

Application filed July 22, 1880.

To all whom it may concern Be it known that I, WILLIAM KELLY, ofSaranac, in the county of Ionia and State of Michigan, haveinvented'certain new and useful Improvements in Harrow-Teeth and I dohereby declare that the followingis a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form part of thisspecification, in which- Figure l is a perspective, and Fig. 2 acrosssection, showing the method of attaching the teeth to the wood-workof the cultivator.

The nature of my invention consists in the peculiar construction ofcultivator-teetb-that is to say, in making twin or double teeth from oneand the same piece of spring metal, which admits of their being securedby one fastening device, all substantially as hereinafter to be fullyset forth.

To enable others skilled in the art to which my invention relates tomake and use it, I will now proceed to describe its construction andoperation.

2 5 Arepresents a piece or strip ot'spring metal, each end thereof beingformed or fashioned into a spear-like tooth, b. The shape of these teethmay, however, be varied without in the least departing from the essenceof my invention. The strip or tooth A should be of sufficient length toadmit of its having one or more spiral coils, in such a manner that theteeth I) b will straddle or project downward upon opposite sides of thecross bar or beam 0, while the 3 5 coil may extend some little distanceabove it,

(No model.)

as fully shown in the drawings. The two ends of strip A may reach to thesame or different planes, as shall be preferred. On the under side ofbar 0 is formed a notch or groove, in which the strip A is placed andover which the plate at is screwed.

It will thus be seen that this method of cons tructiu g cultivator-teethenables me to secure the pair withone fastening, which effects saving inboth wood and metal, while the simplic- 4 5 ity of the fastening itselfrenders it very easy to remove or adjust the teeth when necessary to doso.

I am aware that it is not new, broadly, to construct a barrow-tooth fromone piece of spring metal, and therefore do not claim such as myinvention; but

What I do claim as new, and desire to secure by Letters Patent, is-

1. A double harrow-tooth formed from one piece of coiled spring metal,the points thereof being upon the same horizontal plane, but not uponthe same vertical line, substantially as'herein set forth.

2. The combination, with the beam 0 of a harrow, of the double tooth A,formed, as described, from one piece of spring metal, and secured to thebeam, substantially in the manner and for the purpose set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

Witnesses: WILLIAM KELLY.

J osnrn J. GRANGER,

DANIEL D. WILsoN.

